We are live on ! Find out more
MSTU

T-Rex 2X Long MSTR Daily Target ETF
MSTU

29 hedge funds and large institutions have $19M invested in T-Rex 2X Long MSTR Daily Target ETF in 2025 Q4 according to their latest regulatory filings, with 10 funds opening new positions, 9 increasing their positions, 6 reducing their positions, and 30 closing their positions.

New
Increased
Maintained
Reduced
Closed

50% more repeat investments, than reductions

Existing positions increased: 9 | Existing positions reduced: 6

0.45% more ownership

Funds ownership: 0.05% → 0.5% (+0.45%)

8% less call options, than puts

Call options by funds: $11.7M | Put options by funds: $12.8M

42% less funds holding

Funds holding: 50 → 29 (-21)

63% less capital invested

Capital invested by funds: $51.4M → $19M (-$32.4M)

67% less first-time investments, than exits

New positions opened: 10 | Existing positions closed: 30

Holders
29
Holders Change
-21
Holders Change %
-42%
% of All Funds
0.35%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
10
Increased
9
Reduced
6
Closed
30
Calls
$11.7M
Puts
$12.8M
Net Calls
-$1.04M
Net Calls Change
+$1.06M

Top Buyers

Rank Fund Capital Flow
1
Jane Street
Jane Street
New York
+$30M
2
BNP Paribas Financial Markets
BNP Paribas Financial Markets
France
+$4.73M
3
HF
HRT Financial
New York
+$3.23M
4
UBS Group
UBS Group
Switzerland
+$2.28M
5
SG
StoneX Group
New York
+$836K

Top Sellers

Rank Fund Capital Flow
1
AFAS
Acorn Financial Advisory Services
Virginia
-$4.9M
2
Citigroup
Citigroup
New York
-$4.64M
3
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
-$3.27M
4
Group One Trading
Group One Trading
Illinois
-$1.61M
5
Renaissance Technologies
Renaissance Technologies
New York
-$1.3M

MSTU Hedge Fund Activity: Q4 2025 in Review

29 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in T-Rex 2X Long MSTR Daily Target ETF (MSTU) for Q4 2025, worth a combined $19M — down 63% from $51.4M a quarter earlier.

Sellers outnumbered buyers: 30 funds closed out of MSTU and 10 opened new positions — a net loss of 20 holders — while 6 trimmed existing stakes and 9 added.

The largest buyer was Jane Street, opening a new position worth an estimated $30M. The largest seller was Acorn Financial Advisory Services, exiting entirely with an estimated $4.9M sold.

  • 29 institutional investors held T-Rex 2X Long MSTR Daily Target ETF (MSTU) as of Q4 2025, down from 50 in Q3 2025.
  • Funds reported $19M of T-Rex 2X Long MSTR Daily Target ETF stock for Q4 2025, down 63% quarter-over-quarter.
  • 10 funds opened new T-Rex 2X Long MSTR Daily Target ETF positions in Q4 2025 and 30 closed out, a net change of -20 holders.
  • The largest T-Rex 2X Long MSTR Daily Target ETF buyer in Q4 2025 was Jane Street, an estimated $30M added.
  • The largest T-Rex 2X Long MSTR Daily Target ETF seller in Q4 2025 was Acorn Financial Advisory Services, an estimated $4.9M sold.

Based on aggregated 13F filings for Q4 2025.